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Finding the Fourth Proportional to 719,304, 992,639.52 and 401,352

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Solution

The fourth proportional to 719,304, 992,639.52 and 401,352 is: 553,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,304 : 992,639.52 = 401,352 : x
  2. Step 2: Convert to fraction form
    719,304/992,639.52 = 401,352/x
  3. Step 3: Cross multiply
    719,304x = 992,639.52 × 401,352
  4. Step 4: Simplify right side
    719,304x = 398,397,856,631.04
  5. Step 5: Solve for x
    x = 398,397,856,631.04/719,304
  6. Step 6: Final answer
    x = 553,865.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.